US2009237447A1PendingUtilityA1
Inkjet printhead having wiped nozzle guard
Est. expiryMay 23, 2020(expired)· nominal 20-yr term from priority
Inventors:Kia Silverbrook
B41J 2/165B41J 2/1628B41J 2/1642B41J 2002/14435B41J 2/14427B41J 2/1433B41J 2/1646B41J 2/1648B41J 2/1631B41J 2/16538B41J 2002/14443B41J 2/16535B41J 2/1639B41J 2/1645B41J 2/16502
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Claims
Abstract
An inkjet printhead is provided having a substrate, a plurality of inkjet nozzles arranged on the substrate, an apertured nozzle guard positioned over the nozzles so that apertures in the nozzle guard are aligned with each nozzle, and a wiper blade for wiping an exterior surface of the nozzle guard relative to the nozzles. The exterior surface has recesses around each aperture.
Claims
exact text as granted — not AI-modified1 . An inkjet printhead comprising:
a substrate; a plurality of inkjet nozzles arranged on the substrate; an apertured nozzle guard positioned over the nozzles so that apertures in the nozzle guard are aligned with each nozzle; and a wiper blade for wiping an exterior surface of the nozzle guard relative to the nozzles, said exterior surface having recesses around each aperture.
2 . An inkjet printhead as claimed in claim 1 , wherein the substrate is a silicon substrate and comprises a dielectric layer on the silicon substrate and a CMOS passivation layer on the dielectric layer.
3 . An inkjet printhead as claimed in claim 1 , wherein each nozzle is surrounded by a raised rim.
4 . An inkjet printhead as claimed in claim 1 , wherein the substrate defines a plurality of ink inlet apertures which are surrounded by a corresponding wall.Join the waitlist — get patent alerts
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